DI-9 Manual PDF - Utah Department of Public Safety

SPEEDRationale: Speed is a crash indicator. It is important to include specific pieces of information.These will include information prior to the crash. An officer may have to estimate speeds asindicated by road markings, eye witnesses, crash severity, etc.PostedDefinition: Authorized speed limit for the motor vehicle at the time of the crash. The speed limitmay be indicated by a regulatory speed limit sign.Enter the authorized speed for the roadway on which the vehicle was traveling. If the roadway orarea (parking lot, private property, etc.) is unknown or not posted, mark ‘U’ for unknown.Rationale: Important for evaluation purposes (even though the speed of the motor vehicle at thetime of the crash may differ significantly from the authorized speed limit).Posted AdvisoryIf there is a warning sign with a posted advisory speed (such as for curves, construction, etc,) enterthe advisory speed in the Posted Advisory box for each vehicle. Write ‘U’ for unknown or mark adash if there is not a Posted Advisory speed limit.Estimated TravelEnter the estimated speed each vehicle prior to the crash. Write the speed in the box provided.Write ‘U’ for unknown.Estimated ImpactEnter the estimated speed of each vehicle at impact. This speed may or may not be the same as theest. travel speed. The speed will depend up many factors including any attempts to brake or swerve.Write the speed in the box provided. Write ‘U’ for unknown or dash for not applicable.Estimated ByCheck the appropriate box to indicate how the speed of each vehicle was estimated.OfficerWitnessDriverNoneOccupant32